package com.mrtaohuan.servlet.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import com.google.inject.Singleton;

@Singleton
public class HttpRequestFilter implements Filter {
	private String encoding = "UTF-8";

	@Override
	public void destroy() {
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {

		request.setCharacterEncoding(encoding);
		response.setCharacterEncoding(encoding);

		final long startTimeMillis = System.currentTimeMillis();
		request.setAttribute("START_TIME_MILLIS", startTimeMillis);
		chain.doFilter(request, response);
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {

	}

}
